Ejector for the contents of collapsible tubes



Au .19,1930. SGJQH SQg 1,773,104

/ EJECTOR FOR THE CONTENTS OF COLLAPSIBLE TUBES Filed Dec. 15, 1927.

Patented Aug. 19, 1930 UNITED STATES STANLEY G. JOHNSON, OF HARTFORD, CONNECTICUT EJ'ECTOR FOR THE CONTENTS OF COLLAPSIIBLE TUBES Application filed December 15, 1927. Serial No. 240,315.

My invention relates to the class of devices for closing the walls of collapsible tubes to gether for the purpose of ejecting the contents from the mouth of the tube, and an object of mfy invention, among others, is the production 0 a device of this class that shall be simple and therefore inexpensive to construct, and one that shall be particularly efficient in its operation.

One form of ejector embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the'accompanying drawings, in which Figure 1 is a front view of my improved ejector shown as applied to a collapsible tube from which the contents have been partly forced.

Figure 2 is a similar View, but looking from a point located at right angles to the point of View of Figure 1.

Figure 3 is an isometric view showing the device with the contents of the tube partially expelled.

In the accompanying drawings the numeral 5 indicates a collapsible tube constructed in any well known manner of ductile material and usually having a mouth closed by a screw cap 6. In obtaining the contents of the tube the body is flattened, as at 7, usually beginning at the bottom end, which flattening causes the contents to be extruded through the mouth of the tube where the contents are removed. It is my purpose to provide a device by means of which this flattening of the tube may be readily accomplished in a manner to prevent backfiow of material into the flattened part of the tube. 1

Such a device is shown in the accompanying drawings in which the numeral 8 denotes ejecting rolls, preferably having their peripheries knurled or otherwise roughened to enable them to be readily turned, as by pres sure of the thumb and finger. These rolls are provided at each end with a head 9 forming a groove 10 within which grooves the ends of spring ties or roller supports 11 are attached. In the preferred form of construction, and as shown herein, each spring tie or support comprises two arms 12, preferably of inverted V-shape and having their ends bent into the form of a 100 13 within which the neck between the b0 y and head and forming the groove 10 is received. A

There are two of these supports, one located at each end of the structure, and as clearly shown in the drawings. In use the tube is taken in one hand and the ejector is taken between the thumb and finger of the other hand and then by action of the thumb and fin er a rotating movement is given to the ro ls 8 whereby they are moved along the tube from the bottom end thus squeezing the walls of that portion of the tube along Which they pass into close contact and thereby forcing out all of the contents between such walls. The ties 11 are preferably composed of spring metal so constructed that in their normal condition they. will force the rolls 8 sufiiciently to bring them into contact when not engaged with the tube.

In accordance with the provisions of the patent statutes I have described the princi ples of operation of m invention, together with the device which now consider to represent the best embodiment thereof but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim 1. An ejector for the contents of collapsible tubes, said ejector being mounted on and supported solely by the tube being emptied and including a pair of ejecting rolls provided with means for manually promoting their travel along a tube, and a support attached to the adjacent ends of said rolls and having spring qualities to force .said rolls toward each other, the supports at opposite ends of the rolls being entirely detached with respect to each other.

2. An ejector for the contents of collapsible tubes, said ejector bein mounted on and supported solely by the tu e being emptied and including a pair of ejecting rolls provided with roughened surfaces for promoting their travel along a tube, a head on each end of each roll and attached thereto by a reduced neck,

a spring tie for each end of the pair of rolls, each tie having divergent arms, and

' means at the end of each of said arms for rotatably attaching each to one of said necks,

said means comprising an end of a me wrapped around a neck of a roll to act as a bearing for said roll.

STANLEY G. JOHNSON. 

